I had a great day as I bottled a toasted coconut porter at 5.1% and I got 50 bottles form the 5 gallon batch.Now to let it condition.
1) A rolling pin is the correct method.
2) Yes, the coconut bag must be sanitized before adding the coconut. Put it in a pot of boiling water for 5 minutes. Let it cool, remove with sanitized tongs and put on sanitized plate. Put in toasted coconut, tie with sanitized string, gently place into fermenter.
4) 4 weeks, put ONE bottle in the frig for 3 days, then taste it. If it's good, put more in. If it needs more time, give them more time.